Stability moves like the plank are a great way to strengthen a weak core and prevent lower back pain. But if you want to kick things up a notch, then start dancing. When you perform the breakdancer, you'll quickly move your feet from side to side and across your body. However, you must maintain the same rigid, straight torso that you would when performing a plank. "It adds a whole new level of difficulty because your core has to fight to stay stable against the fast-paced motion of your legs," says BJ Gaddour, C.S.C.S. and creator of 10-Minute Torchers. Plus, your arms, shoulders, and upper-back muscles will feel a big burn as they balance your body above the floor. So you'll not only have a chiseled torso, but you'll also have an impressive move to show off on the dance floor this weekend. Ready to try it? Watch the video below to perform the breakdancer with perfect form.